Non-puncturable inner tire.



110.880,923. PATETED MAR. s, 1908. B. F. SGHIRMER.

NON-PUNGTURABLE INNER TIRE. APPLIGATION FILED Nome. 1905.

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BALDWIN F. SCHIRMER, OF INDIANAPOLIS, INDIANA N ON-PUNCTURABLE INNER TIRE.

Specification of Letters Patent.

Patented March 3, 1908.

Application led November 6, 1905. Serial No. $6,025.

To all whom tt may concern.' Be it known that I, BALDWIN ESGHIRMER, a'citizen of the UnitedStates, and resident of Indianapolis,'county of `Marion, State of Indiana, have invented certain new and useful Improvements in Non- Puncturable Inner, Tires, of which .I hereby declare the followingA to be a full, clear, and'exact description, such as willenable others skilled in the artto which it appertains to make and use the same.

The objects of the invention are to provide a non-puncturable inner tire for pneumatic ders havingpistcns thereinfarranged about.

the rim of the-wheel, acommon annular. airV chamber .for the cylinders and an 'out-er tire int-losing the buf'l'er springs, which can be formed of rubber or any fibrous. material or webbing having the requisite strength and impreemated. with Water proof and air proof material. A

The invention further consists in the'multiplo compressed air and vacuum chambers, and the various details ofconstruction and combinat-ionand arrangement of par-ts, as 'hereinafter described, shown in the vaccom- 3 panyine drawings and specifically point-ed out in the tilaims. I l' v In the accompanying drawings Figure l is a transverse section of a tire and rim, showing a buffer spring or compressed air cylinder and piston in'longitudinal section; Fig. f2 isa 'section thereof taken on a plane at right angles to that .of Fig. 1 Fig. 3 isa view of a portion of a Wheel tire showinga series of the buffer springs and a common compressed air chamber.v In these views, 1 is the Wooden or other tire of the wheel, 2 the-outervtire of flexible and. preferably air proof material, 3 is an annular chamber which is provided with openings 4 which communicate severally with the compressed air cylinders housed Wit hin the outer tire. An admission tube 5, and check valve 6, permit the-entrance of the air to this chamber 3'. In the Vinner wall of vthis chamber' are secured the cylinders 7 communicating with the openings 4. -Within each cylinder reciprocates a piston 8,

which is retained therein by the cap or head y 9, and pivoted upon vthe piston at 10 to per-1 mit of perfect' adjustment to the outer tube isV a shoe 11, which may be composed of any material most suitable and may possess a rubber lining at 12. The outer educ of this shoe should conformv in shape to the arc of the outer tire with which it engages. f

It will readilyA be seen .that a complete circumference is provided for the inner tire, composed of this series of piston shoes as seen in Fig'. 3 and that pressure upon any part is resisted by the -compressedair within the cylinders, thus forming a uniformly resilient tire of great strength and incapable of injury from any 'object ordinarily encounteredv in touring upon the roads or pavement.

Having vdescribed the invention what I claim as new and desire to secure by Letters Patent is:

1. The combination with the rim and tubular tire, of an annular chamber adjacent to the-rim, a series of cylinders housed within shoe pivoted upon each ,is-ton and adapted to engage the inner sur ace of the tubular tire, substantially-as described.

2. The combination with a rim, and aV ytubular resilient tu'e thereon, of an annular chamber in the rim,a series of cylinders housed within the resilient tire and radially secured therein and severally communicating with said chamber pistons in said cylinders, and a shoe for each piston7 each shoe having an 'extended base and pivotally connected with its piston, substantial-ly as described.

, 3. The combination with a rim, and a tubular resilient tire thereon, of an annular chamber in the rim, a series of cylinders secured radially in the outer -wall of 'said chamber, and communicating with said opening, the said cylinders being housed within thesaid tubular tire, a pivoted outer portieri for each piston and a foot therefor curved laterally on its outer edge to engage the inner surface of the tire, and an admission tube for air leading to said chamber and, check valve therefor, substantially as described.

In 'testimony whereof I hereunto set my hand this 12th dayof Sep. 1905.

BALDWIN F. SCHIRMER. Witnesses WM. M. MONROE,

C. H. Ortnerl the tubular tire and communica-tingr with said chamber, a piston in each chamber, and a 

